Laars LAARS-RE2033900 Ignition Module 24 Volt

Product Description

The LAARS LAARS-RE2033900 is a 24-volt ignition module designed for use in hydronic heating and boiler systems. This control component manages the ignition sequence, providing a trial-for-ignition cycle that initiates and monitors the burner firing process. Rated at 24 volts and configured for a single ignition trial with an 8-second trial-for-ignition (TFI) period and a 0-second prepurge, this module ensures consistent, safe burner startup. It is typically installed by licensed HVAC technicians or heating system service professionals during routine maintenance or control board replacement work.

This ignition module is suited for residential and light commercial boiler and heating appliance applications where a 24-volt control circuit is standard. The module's trial-for-ignition configuration is common in gas-fired hydronic boilers and similar heating equipment that requires supervised ignition control. When compatible heating systems experience ignition lockout, nuisance shutdowns, or complete ignition failure, this module is a direct-replacement candidate for restoring proper burner operation.

Key Features

• 24-volt control circuit compatible with standard low-voltage heating system wiring
• 8-second trial-for-ignition (TFI) period for supervised burner startup
• 0-second prepurge setting for systems not requiring a pre-ignition purge delay
• Single ignition trial configuration before lockout, promoting safe operation
• OEM-style replacement designed for LAARS heating equipment

Compatibility

Designed as an OEM-style replacement ignition module for LAARS gas-fired boiler and heating systems utilizing a 24-volt control circuit with supervised ignition.

Installation Notes

Ignition module replacement should be performed by a qualified HVAC technician or licensed heating contractor. Before servicing, shut off all electrical power to the heating system at the disconnect switch and close the manual gas supply valve. Work must comply with applicable local codes and the equipment manufacturer's installation instructions. Do not restore power or gas until all wiring connections are verified secure and the control panel is fully reassembled.

Technical Specifications

• Control Voltage: 24 volts
• Trial for Ignition (TFI): 8 seconds
• Prepurge Time: 0 seconds
• Ignition Trials: 1

Standard Information

• Brand: LAARS
• Manufacturer Part Number: LAARS-RE2033900